Yesterday night, Cuba faced a complete blackout when its national power grid failed at the Diezmero substation near Havana, impacting over 10 million residents. This incident is the fourth nationwide outage in five months. The recurring blackouts highlight Cuba's worsening energy crisis, as deteriorating infrastructure and fuel scarcities have rendered 42% of the national grid inoperative. The interruptions in crucial services such as cooking and water pumping have led to social disturbances.